Abstract
The present work deal with the construction of a basic simulation system of the evolution of microstructure during cyclic heat treatment in order to estimate and propose a suitable welding condition for fabricating sound joint. Potts model containing hexagonal array of 200×200 sites was generated for representing polycrystalline structure. Monte Carlo simulation technique was utilized to realize migration of phase boundaries and grain boundaries at elevated temperature. The pattern of temperature cycle was settled to alter the microstructure by precipitation and grain growth at higher temperature where the solution treatment proceeds. The present system can provide any number of nucleation site on each grain boundary and also nucleation site in grain interior. Precipitation nucleated at grain boundaries was successfully realized and successive grain growth at higher temperature was also represented.
